You install gdisk and mdamd packages using the command
apt-get yum etc install gdisk mdadm
You copy the partition table using the tool gdisk:
sgdisk -R=/dev/sdX /dev/sdY
where the first disk X is the disk you copy onto and Y is the one you copy the partition from. So if you want to copy from sda disk onto sdb disk the command should look like this:
sgdisk -R=/dev/sdb /dev/sda
You create raid using the following command (X is an appropriate disk partition)
mdadm --create /dev/md0 --verbose --level=0 --raid-devices=2 /dev/sdaX /dev/sdbX
Checking your partition layout you look for home partition, only here you can make raid0 or raid1.It's impossible to make raid from system partition.
You format the newly made partition with mkfs, an example for ext4
mkfs.ext4 -m1 /dev/md0
Now you have to mount partition raid0 in an appropriate place, so you check the ID of the newly made partition using the command:
Next you copy the ID of your disk to /etc/fstab (in your case the place is /home)|
You mount your disk.
If everything was done properly, after you restart your machine the disks should work as raid0